16131955929 has 4 divisors (see below), whose sum is σ = 21509274576. Its totient is φ = 10754637284.

The previous prime is 16131955919. The next prime is 16131955963. The reversal of 16131955929 is 92955913161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16131955929 - 2⁴ = 16131955913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16131955919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2688659319 + ... + 2688659324.

It is an arithmetic number, because the mean of its divisors is an integer number (5377318644).

Almost surely, 2^16131955929 is an apocalyptic number.

It is an amenable number.

16131955929 is a deficient number, since it is larger than the sum of its proper divisors (5377318647).

16131955929 is an equidigital number, since it uses as much as digits as its factorization.

16131955929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377318646.

The product of its digits is 656100, while the sum is 51.

The spelling of 16131955929 in words is "sixteen billion, one hundred thirty-one million, nine hundred fifty-five thousand, nine hundred twenty-nine".